73552661 has 16 divisors (see below), whose sum is σ = 92636544. Its totient is φ = 56839104.

The previous prime is 73552651. The next prime is 73552679. The reversal of 73552661 is 16625537.

It is not a de Polignac number, because 73552661 - 2¹⁸ = 73290517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73552601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5486 + ... + 13311.

It is an arithmetic number, because the mean of its divisors is an integer number (5789784).

Almost surely, 2^73552661 is an apocalyptic number.

It is an amenable number.

73552661 is a deficient number, since it is larger than the sum of its proper divisors (19083883).

73552661 is a wasteful number, since it uses less digits than its factorization.

73552661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18860.

The product of its digits is 37800, while the sum is 35.

The square root of 73552661 is about 8576.2848017076. The cubic root of 73552661 is about 418.9859531293.

The spelling of 73552661 in words is "seventy-three million, five hundred fifty-two thousand, six hundred sixty-one".